|Piping stubs can be seen coming through the layer
of insulation below the floor slab. A footing runs
down the center of the house below a load bearing wall.
Once the floor slab was poured the contractor had to cut control joints in the concrete. Concrete will expand and contract with changes in temperature and humidity, especially with a heated slab, and when this happens the concrete can crack. These control joints will allow us to define where the cracking occurs, like in a perfectly straight line between to rooms, rather than at random through the middle of a room. There is always a chance that cracking will occur where you don't want it, but that's just the risk you take when going with a finished concrete floor.
For the floor finish we looked into several options and ultimately decided upon a process of polishing and staining the concrete after it had cured. This would allow the general contractor to proceed with framing the house, and hold off on really finishing the floor until the house was fully enclosed.The subcontractor who would do this was Jon Meade, a Portland-based "concete artisan" who specializes in countertops on floors.
|View of the foundation prior to pouring the slab|
|The almost completed floor slab, you can see where control joints are being cut.|